The English law is less embarrassed with inconsistent resolutions and doubtful questions, than any other known system of the same extent and the same… - William Blackstone

The absolute rights of man, considered as a free agent, endowed with discernment to know good from evil, and with power of choosing those measures which appear to him to be most desirable, are usually summed up in one general appellation, and denominated the natural liberty of mankind. This natural liberty consists properly in a power of acting as one thinks fit, without any restraint or control, unless by the law of nature: being a right inherent in us by birth, and one of the gifts of God to man at his creation, when he endowed him with the faculty of freewill. But every man, when he enters into society, gives up a part of his natural liberty, as the price of so valuable a purchase; and, in consideration of receiving the advantages of mutual commerce, obliges himself to conform to those laws, which the community has thought proper to establish.

In this distinct and separate existence of the judicial power, in a peculiar body of men, nominated indeed, but not removable at pleasure, by the crown, consists one main preservative of the public liberty; which cannot subsist long in any state, unless the administration of common justice be in some degree separated both from the legislative and the also from the executive power. Were it joined with the legislative, the life, liberty, and property of the subject would be in the hands of arbitrary judges, whose decisions would be then regulated only by their own opinions, and not by any fundamental principles of law; which, though legislators may depart from, yet judges are bound to observe. Were it joined with the executive, this union might soon be an overbalance for the legislative. For which reason... effectual care is taken to remove all judicial power out of the hands of the king's privy council; who, as then was evident from recent instances might soon be inclined to pronounce that for law, which was most agreeable to the prince or his officers. Nothing therefore is to be more avoided, in a free constitution, than uniting the provinces of a judge and a minister of state.

"In Magna Carta it is more than once insisted on as the principal bulwark of our liberties; but especially by chap. 29. that no freeman shall be hurt in either his person or property, “nisi per legale judicium parium suorum vel per legem terrae “ ["unless by the lawful judgment of his peers, or by the law of the land"]."